December 2, 1843 The Alexandria Canal was officially opened to trade and navigation on the Potomac River. (Alexandria was part of the District of Columbia at the time but would be returned to Virginia about two years later.) This canal, which ultimately ran southwards for seven miles (11.3 kilometers) through Alexandria and Virginia’s present-day Arlington... Continue Reading →

September 25, 1938  The big sports event in Washington, D.C., on that Sunday was without question the President’s Cup Regatta. This multi-day series of waterborne competitions had been introduced in the nation’s capital a dozen years earlier, and the annual event quickly became renowned for the motorboats and hydroplanes participating in a variety of races... Continue Reading →

November 7, 1857 On Maryland’s side of the Potomac River, a cast iron light pole was installed as the first navigational aid in an area that is about 20 miles (32.2 kilometers) south of Washington, D.C. This pole was specifically put into place on the grounds of Fort Washington, which ultimately served for many years... Continue Reading →

September 20, 1830 Point Lookout Light in southern Maryland was formally inaugurated. This structure, marking the mouth of the Potomac River, is located at the southernmost tip of the state’s western shore of the Chesapeake Bay. (The origins of the name “Point Lookout” can be traced to the War of 1812, when that area was... Continue Reading →

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